Why Are We Here? takes us on a journey from the Big Bang to the origin and evolution of complex, intelligent life in a search for the meaning of human existence. How did chemistry come to life? How did the release of oxygen by cyanobacteria change the natural history of life? How did mass extinctions reset the clock and reshape the course of biological evolution? Why are we Homo sapiens so dominant? We share over 98% of our DNA with chimpanzees, yet we build vast civilizations, while chimps are confined to forests and sadly to experimental laboratories and zoos. How come? How will cultural and technological evolution, which have now transcended biological evolution, shape the future of life on our planet? Can we escape the many existential threats that hover over us? Bruce Brodie takes us on an educational and deeply fascinating journey that will give us new perspectives about how we think about our world, our place and purpose in the cosmos, and the future of humanity.